// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/gfx/display.h"

#include "base/command_line.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/geometry/insets.h"
#include "ui/gfx/switches.h"

namespace gfx {

namespace {

    TEST(DisplayTest, WorkArea)
    {
        Display display(0, Rect(0, 0, 100, 100));
        EXPECT_EQ("0,0 100x100", display.bounds().ToString());
        EXPECT_EQ("0,0 100x100", display.work_area().ToString());

        display.set_work_area(Rect(3, 4, 90, 80));
        EXPECT_EQ("0,0 100x100", display.bounds().ToString());
        EXPECT_EQ("3,4 90x80", display.work_area().ToString());

        display.SetScaleAndBounds(1.0f, Rect(10, 20, 50, 50));
        EXPECT_EQ("10,20 50x50", display.bounds().ToString());
        EXPECT_EQ("13,24 40x30", display.work_area().ToString());

        display.SetSize(Size(200, 200));
        EXPECT_EQ("13,24 190x180", display.work_area().ToString());

        display.UpdateWorkAreaFromInsets(Insets(3, 4, 5, 6));
        EXPECT_EQ("14,23 190x192", display.work_area().ToString());
    }

    TEST(DisplayTest, Scale)
    {
        Display display(0, Rect(0, 0, 100, 100));
        display.set_work_area(Rect(10, 10, 80, 80));
        EXPECT_EQ("0,0 100x100", display.bounds().ToString());
        EXPECT_EQ("10,10 80x80", display.work_area().ToString());

        // Scale it back to 2x
        display.SetScaleAndBounds(2.0f, Rect(0, 0, 140, 140));
        EXPECT_EQ("0,0 70x70", display.bounds().ToString());
        EXPECT_EQ("10,10 50x50", display.work_area().ToString());

        // Scale it back to 1x
        display.SetScaleAndBounds(1.0f, Rect(0, 0, 100, 100));
        EXPECT_EQ("0,0 100x100", display.bounds().ToString());
        EXPECT_EQ("10,10 80x80", display.work_area().ToString());
    }

    // https://crbug.com/517944
    TEST(DisplayTest, ForcedDeviceScaleFactorByCommandLine)
    {
        Display::ResetForceDeviceScaleFactorForTesting();

        // Look ma, no value!
        base::CommandLine::ForCurrentProcess()->AppendSwitch(
            switches::kForceDeviceScaleFactor);

        EXPECT_EQ(1, Display::GetForcedDeviceScaleFactor());
        Display::ResetForceDeviceScaleFactorForTesting();
    }

} // namespace

} // namespace gfx
